TY - CHAP
T1 - The use of Raman spectroscopy in the characterization of variscite provenance
T2 - The Gavà case
AU - Melgarejo, Joan Carlos
AU - Arqués, Laia
AU - Villanova-de-Benavent, Cristina
AU - Jahwari, Tariq
AU - Torró, Lisard
AU - Argilagós, Josep Bosch
AU - Castillo-Oliver, Montgarri
AU - Campeny, Marc
AU - Amores, Sandra
AU - Andreazini, Aleu
AU - Lehbib, Saleh
AU - Camprubí, Antoni
N1 - Publisher Copyright:
© the individual authors and Archaeopress 2019. All rights reserved.
PY - 2019/8/29
Y1 - 2019/8/29
N2 - The Gavà phosphate deposit, mined during the Neolithic, was produced by weathering processes affecting primary apatite beds. It exhibits a neat vertical zoning, related to chemical gradients during weathering. Strengite, yellowish Al-rich strengite and ferroan variscite are found at the top, palegreen variscite at the intermediate levels, and green variscite in depth. Fe values are very low in the greenish samples, as well as Cr and V. Raman spectrums of the Gavà variscite show differences with samples from other occurrences worldwide. Moreover, some spectral differences can also be observed in the Raman spectra of variscite coming from different depths in the deposit. Raman spectroscopy can be an efficient tool to discriminate not only samples from different geographical localities, but also from its original position in a given deposit.
AB - The Gavà phosphate deposit, mined during the Neolithic, was produced by weathering processes affecting primary apatite beds. It exhibits a neat vertical zoning, related to chemical gradients during weathering. Strengite, yellowish Al-rich strengite and ferroan variscite are found at the top, palegreen variscite at the intermediate levels, and green variscite in depth. Fe values are very low in the greenish samples, as well as Cr and V. Raman spectrums of the Gavà variscite show differences with samples from other occurrences worldwide. Moreover, some spectral differences can also be observed in the Raman spectra of variscite coming from different depths in the deposit. Raman spectroscopy can be an efficient tool to discriminate not only samples from different geographical localities, but also from its original position in a given deposit.
KW - Microprobe
KW - Raman
KW - Supergene
KW - Variscite
KW - Veins
UR - http://www.scopus.com/inward/record.url?scp=85119147841&partnerID=8YFLogxK
M3 - Chapter
AN - SCOPUS:85119147841
SN - 9781789692808
SP - 241
EP - 251
BT - La parure en callaïs du Néolithique européen
PB - Archaeopress
ER -